
\pgfplotsset{compat=1.5, width=7cm, height=6cm}


\begin{tikzpicture}[scale=1.2, every node/.style={transform shape}]

% Define parameters
\def\gammapar{.8}
\def\taupar{.4}
\def\etapar{-2}
\def\height{5}
\def\width{8}

% Plot curves
	

\begin{axis}[axis lines=none, xmin=0, ymin=0, y=5.5cm, x=7cm, clip=false]

\addplot[name path=c1,domain={0:.85},semithick,blue!100,
		decoration={text along path,
			text={|\it \scriptsize \color{blue!100} |c|| |\scriptsize \color{blue!100} |= {--}1.0 ||},
			text align={left indent=+110pt}, raise=1pt,
		},
		postaction={decorate},
		]
		{1-(\gammapar * \taupar * x)/(1 - (-1*1) * x)}
		node[pos=1, right, yshift=0pt,xshift=-3pt,blue!100]{$\widetilde{A}$};

\addplot[name path=c1,domain={0:.85},semithick,blue!80,
		decoration={text along path,
			text={|\it \scriptsize \color{blue!80} |c|| |\scriptsize \color{blue!80} |= +0.1 ||},
			text align={left indent=+110pt}, raise=1pt,
		},
		postaction={decorate},
		]
		{1-(\gammapar * \taupar * x)/(1 - 0.1 * x)}
		node[pos=1, right, yshift=0pt,xshift=-3pt,blue!80]{$\widetilde{A}$};

\addplot[name path=c1,domain={0:.85},semithick,blue!60,
		decoration={text along path,
			text={|\it \scriptsize \color{blue!60} |c|| |\scriptsize \color{blue!60} |= +0.5 ||},
			text align={left indent=+110pt}, raise=1pt,
		},
		postaction={decorate},
		]
		{1-(\gammapar * \taupar * x)/(1 - 0.5 * x)}
		node[pos=1, right, yshift=0pt,xshift=-3pt,blue!60]{$\widetilde{A}$};


\addplot[name path=c2,domain={0:.8},semithick,blue!40,
		decoration={text along path,
			text={|\it \scriptsize \color{blue!40} |c|| |\scriptsize \color{blue!40} |= +0.9 ||},
			text align={left indent=+110pt}, raise=1pt,
		},
		postaction={decorate},
		]
		{1-(\gammapar * \taupar * x)/(1 - 0.9 * x)}
		node[pos=1, right, yshift=0pt,xshift=-3pt,blue!40]{$\widetilde{A}$};

\end{axis}

% Draw axes and lines
\draw (0,0) -- ({\width},0) node[midway, sloped, below=4pt] {$\phi$}
														node[at start, sloped, below=4pt] {$0$}
														node[at end, sloped, below=4pt] {$1$};
\draw[very thin]  (-.1,5.5) -- (.1,5.5);	%tick
\draw[very thin]  ({\width-.1},5.5) -- ({\width+.1},5.5);	%tick
\draw[->]  (0,0) -- (0,6) node[at end, left=10pt, below=5pt] {$\widebar{A}$};   %label
\draw[very thin]  ({\width-.1},{(1-\gammapar)*5.5}) -- ({\width+.1},{(1-\gammapar)*5.5});	%tick
\draw[->] ({\width},0) -- ({\width},6) node[right=3pt] at ({\width},{(1-\gammapar)*5.5}) {$\underline{A}$};

\draw[dotted] (0,5.5) -- ({\width},{(1-\gammapar)*5.5});
\draw (0,5.5) -- ({\width},{(1-\taupar*\gammapar)*5.5});

\draw [decorate,very thin,black!40,decoration={brace,amplitude=6pt},xshift=1pt,yshift=0pt]
({\width+.02},{5.5-.025}) -- ({\width+.02},{(1-\gammapar)*5.5 + .025}) node [black!40,midway,xshift=10pt] 
{ $\gamma $};

\draw [decorate,very thin,black!40,decoration={brace,amplitude=6pt, mirror},xshift=-1pt,yshift=0pt]
({\width-.02},{5.5-.025}) -- ({\width-.02},{(1-\taupar*\gammapar)*5.5 + .035}) node [black!40,midway,xshift=-12pt] 
{ $\tau \gamma $};



\end{tikzpicture}
